Agile optical wavelength selection for antenna beamforming
US7084811B1 · kind B1 · utility
44Cited by
8References
48Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2004 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Sep 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/2676
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna beamformer consisting of optical irises coupled to Wavelength Division Multiplexers (WDMs). The ports of the WDMs are coupled to lens ports, where each lens port corresponds to a different antenna beam. The optical irises are optical filters with selectable center frequencies and selectable passband widths. Selection of different center frequencies and passband widths enables the selection of different ports of the WDMs, which allows the selection of one or more antenna beams. The beamformer may also have controllable delay lines to provide for additional beam steering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.